Gustav Tappe
12Patents
3h-index
15Co-inventors
53Inventor score
Filing activity: Aug 18, 1989 → Jun 7, 2001
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5238791A | Bleaching bath | Physics | 20 | Expired |
| US5149618A | Bleach fixing process | Physics | 15 | Expired |
| US4933264A | Process for processing a color photographic material | Physics | 4 | Expired |
| US6413703B1 | Color photographic developer concentrate | Physics | 3 | Expired |
| US6251573A | Color photographic developer concentrate | Physics | 2 | Expired |
| US5110715A | Photographic reversal process | Physics | 1 | Expired |
| US5565138A | Bleach | Physics | 1 | Expired |
| US4987058A | Photographic processing method | Physics | 1 | Expired |
| US6468723B2 | Concentrate comprising a p-phenylenediamine derivative | Physics | 1 | Expired |
| US6468724B2 | Color photographic developer concentrate | Physics | 0 | Expired |
| US5888709A | Photographic recording material | Physics | 0 | Expired |
| US5856074A | Fixing bath | Physics | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.